Wind risk in Australia. Wang, D. The predominance of Eoarchean to Paleoproterozoic age components, and the marked lack of — Ma components suggest that the source was the extended? In general, the high-Ti HT basalts from the Apollo 11 and Apollo 17 sites are relatively old; commonly ranging in age from 3. Terada, C. Sano, K.
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Sensitive high-resolution ion microprobe
A comparison between the zircon crystals of the Portalegre and those of the Alter Pedrosoorthogneisses analyzed by Lancelot and Allegret shows that the latter are generally anhedral, equant and were possibly formed during a late crystallization stage of the parent alkaline magma.
In-Situ U-Pb Dating of Apatite by Hiroshima-SHRIMP: Contributions to Earth and Planetary Science.
Although it is often recognized simply as a zircon analysis device, its capabilities should be applied to other geo- and cosmochemical studies. Since its installation, our focus has been on the in-situ U—Pb dating of the mineral apatite, as well as zircon, which is a more common U-bearing mineral. Zheng, Y.